| Identification | More | [Name]
Vanadium pentoxide | [CAS]
1314-62-1 | [Synonyms]
VANADIUM
VANADIUM AA/ICP CALIBRATION/CHECK STANDARD
VANADIUM AA SINGLE ELEMENT STANDARD
VANADIUM, AAS STANDARD SOLUTION
VANADIUM AA STANDARD
VANADIUM ATOMIC ABSORPTION SINGLE ELEMENT STANDARD
VANADIUM ATOMIC ABSORPTION STANDARD
VANADIUM ATOMIC ABSORPTION STANDARD SOLUTION
VANADIUM ATOMIC SPECTROSCOPY STANDARD
VANADIUM ICP/DCP STANDARD
VANADIUM ICP STANDARD
VANADIUM METAL
VANADIUM METALLO-ORGANIC STANDARD
VANADIUM, OIL BASED STANDARD SOLUTION
VANADIUM, ORGANIC AAS STANDARD SOLUTION
VANADIUM PLASMA EMISSION SPECTROSCOPY STANDARD
VANADIUM PLASMA EMISSION STANDARD
VANADIUM, PLASMA STANDARD SOLUTION
VANADIUM SINGLE ELEMENT PLASMA STANDARD
VANADIUM SINGLE ELEMENT STANDARD | [EINECS(EC#)]
231-171-1 | [Molecular Formula]
O5V-5 | [MDL Number]
MFCD00011453 | [Molecular Weight]
130.94 | [MOL File]
1314-62-1.mol |
| Chemical Properties | Back Directory | [Description]
Vanadium pentoxide is a yellow to red colour solid and is odourless. Vanadium pentoxide
dust is the particulate form of a non-combustible, odourless, yellow-orange or dark grey
crystalline solid.
On decomposition by heating, vanadium pentoxide produces toxic fumes. Vanadium
is widely distributed in the Earth’s crust in a wide range of minerals and in fossil fuels.
Vanadium pentoxide, the major commercial product of vanadium, is mainly used in the
production of alloys with iron and aluminium. It is also used as an oxidation catalyst in
the chemical industry and in a variety of minor applications. | [Appearance]
Vanadium pentoxide dust is an odorless, yellow
to red crystal, or powder; or fume (when vanadium is
heated). Vanadium pentoxide fume is a finely divided particulate
dispersed in air. | [Melting point ]
690 °C | [Boiling point ]
3380 °C(lit.) | [density ]
6.11 g/mL at 25 °C(lit.)
| [vapor pressure ]
8 mm Hg ( 20 °C)
| [Fp ]
1750°C | [storage temp. ]
Poison room | [solubility ]
H2O: soluble
| [form ]
turnings
| [color ]
Orange | [Specific Gravity]
3.357 | [Odor]
at 100.00?%. odorless | [PH]
4 (50g/l, H2O, 20℃)(slurry) | [Stability:]
Stable. Incompatible with chlorine, chlorates, acids, alkali metals, interhalogens. | [Water Solubility ]
1 g/125 mL | [Merck ]
14,9921 | [Exposure limits]
OSHA: Ceiling 0.5 mg/m3; Ceiling 0.1 mg/m3
NIOSH: TWA 1 mg/m3; STEL 3 mg/m3; Ceiling 0.05 mg/m3 | [CAS DataBase Reference]
1314-62-1(CAS DataBase Reference) | [IARC]
2B (Vol. 86) 2006 | [NIST Chemistry Reference]
Vanadium(v) oxide(1314-62-1) | [EPA Substance Registry System]
1314-62-1(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi,N,T | [Risk Statements ]
R36/38:Irritating to eyes and skin .
R68:Possible risk of irreversible effects.
R63:Possible risk of harm to the unborn child.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R48/23:Toxic: danger of serious damage to health by prolonged exposure through inhalation .
R37:Irritating to the respiratory system.
R20/22:Harmful by inhalation and if swallowed . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S38:In case of insufficient ventilation, wear suitable respiratory equipment .
S36/37:Wear suitable protective clothing and gloves .
S36:Wear suitable protective clothing . | [RIDADR ]
UN 3289 6.1/PG 2
| [WGK Germany ]
3
| [RTECS ]
YW1355000
| [F ]
10 | [TSCA ]
Yes | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
28253010 | [Safety Profile]
Poison by ingestion,
inhalation, intraperitoneal, subcutaneous,
intratracheal, and intravenous routes. An
experimental teratogen. Human systemic
effects by inhalation: bronchiolar
constriction, including asthma, cough,
dpspnea, sputum, and conjunctiva irritation.
Experimental reproductive effects. Mutation
data reported. A respiratory irritant; causes
skin pallor, greenish-black tongue, chest
pain, cough, dyspnea, palpitation, lung
changes. When ingested it causes
gastrointestinal tract disturbances. May also
cause a papular skin rash. Mixtures with
calcium + sulfur + water may ignite
spontaneously. The absorption of V2O5 by
inhalation is nearly 100%. Incompatible with
ClF3, Li, peroxyformic acid. When heated to
decomposition it emits acrid smoke and
irritating fumes of VOx. See also
VANADIUM COMPOUNDS. | [Hazardous Substances Data]
1314-62-1(Hazardous Substances Data) | [Toxicity]
LD50 orally in Rabbit: 400 - 500 mg/kg LD50 dermal Rat > 2000 mg/kg | [IDLA]
35 mg V/m3 |
| Hazard Information | Back Directory | [General Description]
A yellow to red crystalline powder. Slightly soluble in water and denser than water. Contact may cause severe irritation to skin, eyes, and mucous membranes. May be toxic by ingestion, inhalation and skin absorption. | [Reactivity Profile]
VANADIUM PENTOXIDE(1314-62-1) is acidic in many reactions. Hence, soluble in bases. [Kirk-Othmer]. Can react with ClF3, Li, peroxyformic acid and (Ca+S+H2O). Also reacts with strong acids. | [Air & Water Reactions]
Slightly soluble in water. | [Health Hazard]
Probable oral lethal dose for humans is between 5 and 50 mg/kg or between 7 drops and 1 teaspoonful for a 70 kg (150 lb.) person. Toxicity is about the same magnitude as pentavalent arsenic. A person with chronic respiratory disease is at greater risk when exposed to this substance. | [Potential Exposure]
(dust); Suspected reprotoxic hazard,
Suspected of causing genetic defects, Primary irritant (w/o
allergic reaction), (fume) Possible risk of forming tumors,
Vanadium pentoxide is an industrial catalyst in oxidation
reactions; is used in glass and ceramic glazes; is a
steel additive; and is used in welding electrode coatings. | [Fire Hazard]
Container may explode in heat of fire. When heated to decomposition, VANADIUM PENTOXIDE emits acrid smoke and fumes of vanadium oxides. Material is not flammable but VANADIUM PENTOXIDE may increase the intensity of the fire when in contact with combustible materials. Avoid chlorine trifluoride; lithium; peroxyformic acid; and calcium, sulfur, water complexes. Hazardous polymerization may not occur. | [First aid]
If this chemical gets into the eyes, remove any
contact lenses at once and irrigate immediately for at least
15 minutes, occasionally lifting upper and lower lids.
Seek medical attention immediately. If this chemical
contacts the skin, remove contaminated clothing and wash
immediately with soap and water. Seek medical attention
immediately. If this chemical has been inhaled, remove
from exposure, begin rescue breathing (using universal precautions,
including resuscitation mask) if breathing
has stopped and CPR if heart action has stopped. Transfer
promptly to a medical facility. When this chemical has been
swallowed, get medical attention. Give large quantities of
water and induce vomiting. Do not make an unconscious
person vomit. Medical observation is recommended for 24
to 48 hours after breathing overexposure, as pulmonary
edema may be delayed. As first aid for pulmonary edema, a
doctor or authorized paramedic may consider administering
a drug or other inhalation therapy. | [Shipping]
UN2862 Vanadium pentoxide, nonfused form,
Hazard Class: 6.1; Labels: 6.1-Poisonous materials. | [Incompatibilities]
Strong acids; lithium, chlorine trifluoride;
peroxyformic acid; combustible substances. | [Chemical Properties]
A yellow to rust-brown or orange crystals or powder. Slightly soluble in water and denser than water. Contact may cause severe irritation to skin, eyes, and mucous membranes. May be toxic by ingestion, inhalation and skin absorption.
| [Chemical Properties]
Vanadium pentoxide dust is an odorless, yellow
to red crystal, or powder; or fume (when vanadium is
heated). Vanadium pentoxide fume is a finely divided particulate
dispersed in air. | [Waste Disposal]
Consult with environmental
regulatory agencies for guidance on acceptable disposal
practices. Generators of waste containing this contaminant
(≥100 kg/mo) must conform to EPA regulations governing
storage, transportation, treatment, and waste disposal.
Vanadium pentoxide may be salvaged or disposed of in a
sanitary landfill. | [Definition]
vanadium pentoxide: A crystalline compound,V2O5, used extensively as a catalyst inindustrial gas-phase oxidationprocesses. | [Hazard]
The compound is toxic by ingestion, inhalation, and contact. Inhalation can cause asthma, cough, dyspnea, and bronchial constriction. Ingestion can cause gastrointestinal tract disturbances. Other toxic symptoms are skin pallor, greenish-black tongue, and papular skin rash (Lewis, R.J. (Sr) 1996. Sax’s Dangerous Properties of Industrial Materials, 9thed. New York: Van Nostrand Reinhold).
The oral LD50 for V2O5 dust in rats is 10 mg/kg and the inhalation LCLO in rats is 70 mg/m3/2hr. | [Carcinogenicity]
Vanadium pentoxide was not mutagenic
in Salmonella strains and did not increase the frequency
of micronucleated erythrocytes in mice.9
In other studies vanadium compounds have produced
clear evidence of aneuploidy in somatic
cells after exposure by several different routes. |
| Questions And Answer | Back Directory | [Physical properties]
Brown-yellow orthorhombic crystals; density 3.35 g/cm3; melts at 670°C; decomposes at 1,800°C; slightly soluble in water, 0.8g/100 mL at 20°C; soluble in concentrated acids forming an orange-yellow solution; soluble in alkalies forming vanadates.
| [Uses]
Vanadium(V) oxide is the oxide form of vanadium. As an important vanadium compound, it is used as the major precursor to alloys of vanadium and is widely used as industrial catalyst. It can be used for the production of ferrovanadium and sulfuric acid. It can also catalyze the oxidation reaction of some anhydrides. It can also be used as a detector material in bolometer arrays for thermal imaging because of its thermal resistance. Vanadium(V) oxide is also a kind of highly selective and stable ethanol sensor materials. Moreover, the microspheres of vanadium(V) oxide formed during the synthesis of vanadium(V) oxide nanorods in a mediated polyol process exhibit excellent electrochemical properties when used as the cathode material in a lithium-ion battery.
Other applications are in making yellow glass; as a depolarizer; as a developer in photography; inhibiting UV transmission in glass;and coloring ceram; as a mordant for dyeing and printing fabrics.
| [Preparation]
Vanadium pentoxide is an intermediate in recovering vanadium from minerals (See Vanadium). Sodium polyvanadate, obtained as a red cake in one of the steps in extracting vanadium from its ores is calcined at 700°C in air to form a melt of vanadium pentoxide. Pentoxide is prepared in purified form by dissolving red cake in sodium carbonate solution followed by addition of an aqueous solution of ammonia and ammonium chloride. Ammonium metavanadate is precipitated which on decomposition at 320 to 430°C forms vanadium pentoxide.
| [References]
Liu, J, et al. "Vanadium Pentoxide Nanobelts: Highly Selective and Stable Ethanol Sensor Materials." Advanced Materials 17.17(2005): 764-767.
Cao, A. M., et al. "Self-assembled vanadium pentoxide (V2O5) hollow microspheres from nanorods and their application in lithium-ion batteries." Angewandte Chemie 44.28(2005): 4391.
Moskalyk, R. R., and A. M. Alfantazi. "Processing of vanadium: a review." Minerals Engineering 16.9 (2003): 793-805.
Khorfan, S., A. Wahoud, and Y. Reda. "Recovery of vanadium pentoxide from spent catalyst used in the manufacture of sulphuric acid." Periodica Polytechnica. Chemical Engineering 45.2 (2001): 131.
Friedrichsen, Wilhelm, and Otto Goehre. "Supported catalysts containing vanadium pentoxide and titanium dioxide and their use for the production of carboxylic acids and carboxylic anhydrides." U.S. Patent No. 3,684,741. 15 Aug. 1972.
Karunagaran, B., et al. "Study of a pulsed laser deposited vanadium oxide based microbolometer array." Smart materials and structures 12.2 (2003): 188.
|
|